On Sat, 17 May 2014, Richard Sandiford wrote: > To rule out one possibility: which GCC are you using for stage1?
I think that may the smoking gun. When I use GCC 4.7 to bootstrap, FreeBSD 8, 9 and 10 all build fine on i386 (= i486) and amd64. When I use the system compiler, which is GCC 4.2 on FreeBSD 8 and 9 and clang on FreeBSD 10, things fail on FreeBSD 10... ...with a bootstrap comparison failure of stages 2 and 3 on i386: https://redports.org/~gerald/20140518230801-31619-208277/gcc410-4.10.0.s20140518.log ...and an interesting failure on amd64: https://redports.org/~gerald/20140518230801-31619-208275/gcc410-4.10.0.s20140518.log In file included from .././../gcc-4.10-20140518/gcc/xcoffout.c:29: .././../gcc-4.10-20140518/gcc/tree.h:4576:3: warning: extraneous template parameter list in template specialization template <> ^~~~~~~~~~~ .././../gcc-4.10-20140518/gcc/wide-int.cc:1274:23: error: invalid use of a cast in a inline asm context requiring an l-value: remove the cast or build with -fheinous-gnu-extensions umul_ppmm (val[1], val[0], op1.ulow (), op2.ulow ()); ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This means this clang-based system is not able to bootstrap GCC trunk on amd64. Perhaps looking into this first may affect the failure on i486? Gerald
